Arabis nuttallii (Kuntze) B. L. Robinson in A. Gray et al. (Q3488)

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Arabis nuttallii is a taxon with the rank species within the genus Arabis
Language Label Description Also known as
English
Arabis nuttallii (Kuntze) B. L. Robinson in A. Gray et al.
Arabis nuttallii is a taxon with the rank species within the genus Arabis

    Statements

    taxon/id/Arabis nuttallii (Kuntze) B.L. Robinson
    0 references
    Arabis nuttallii (Kuntze) B.L. Robinson
    Arabis nuttallii
    (Kuntze) B.L. Robinson
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    arabette de Nuttall (French)
    Nuttall's rockcress (English)
    1 reference
    Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
    1 reference
    Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    Flowering Apr–Aug.
    subalpine meadows
    slopes
    open woods
    steep slopes
    cliffs
    mossy mats
    moist slopes
    hillsides
    ridge crests
    glabrous or sparsely to densely pubescent, trichomes simple, sometimes subsetiform, (0.3–2 mm), these rarely mixed with fewer, short-stalked, forked ones.
    Stems simple or few to numerous from base (caudex), erect or ascending, unbranched, 0.5–2.5 (–3.6) dm, (glabrous throughout or pubescent along proximal 1/2, trichomes simple).
    Basal leaves: petiole 0.3–2 (–3.5) cm, (glabrous or ciliate);
    blade narrowly oblanceolate, spatulate, to obovate, 0.4–2 (–3) cm × 3–10 (–15) mm, margins entire, (ciliate or not), apex obtuse, surfaces glabrous or sparsely to densely pubescent, trichomes simple, rarely mixed with forked ones.
    Cauline leaves (1 or) 2–5 (–7);
    blade linear, oblanceolate, oblong, or obovate, 0.5–2.2 (–3) cm × 2–8 (–12) mm, base not auriculate, margins entire, (sometimes ciliate), apex obtuse, surfaces glabrous or, rarely, sparsely pubescent.
    Fruiting pedicels ascending to divaricate, (2–) 5–20 (–30) mm, (glabrous).
    Flowers: sepals (greenish) oblong, 2.5–3.5 × 1.2–1.5 mm, lateral pair saccate basally, (glabrous);
    petals white, oblanceolate to spatulate, (5–) 6–8 × 2–4 mm, apex rounded;
    filaments 2.5–4 mm;
    anthers oblong, 0.6–1 mm.
    Fruits ascending to suberect, (not appressed to rachis), slightly torulose, sometimes slightly curved, (0.7–) 1–2.5 (–2.8) cm × 0.8–1.2 (–1.5) mm;
    valves each with distinct midvein extending full length;
    ovules 10–24 per ovary;
    style 0.5–1.2 (–2) mm, (slender).
    Seeds not winged, broadly ovate, 0.6–1.2 (–1.5) × 0.5–1 mm. 2n = 32.